Well, if Ash's Pikachu evolved into Raichu in fanfiction, it could change the whole dynamic of their journey. Pikachu's evolution might bring new power levels and moves, making battles easier or more complex. Ash would need to adjust to the new Raichu, and their bond might be affected. Maybe Pikachu's cute factor would be replaced with a more intimidating Raichu presence. It could also lead to new storylines where Ash has to deal with the jealousy of other Pokemon or trainers who are envious of his powerful Raichu.
One possibility is that Ash has to quickly adjust to Raichu's new power levels. Raichu might be a bit more independent compared to Pikachu, which could lead to some initial clashes in their teamwork. But in the end, they could become an even more formidable team, with Raichu's increased strength allowing them to take on tougher opponents in battles.
If Pikachu evolves in a fanfiction, it might have an impact on Ash's relationships with other characters. Some trainers might see Ash as a more serious threat now that his Pikachu has evolved. Others might be jealous or try to figure out how he achieved such a transformation.
In a fanfiction about Pikachu evolving, it might happen because of a strong emotional bond. Suppose Pikachu is trying to protect Ash from a great danger. In that moment of extreme self - sacrifice and love for Ash, it evolves. This evolution could lead to a whole new dynamic in their relationship. Ash would have to learn how to train a Raichu instead of a Pikachu, and Raichu might be more independent but still deeply loyal to Ash.
It could be portrayed as a moment of great transformation. Ash might be hesitant at first, but realizes the potential of a Raichu. The evolution could be triggered by a very powerful opponent that makes Pikachu see the need to evolve. Then, as Raichu, it could start showing off new moves and a more confident attitude, which Ash would have to get used to.
It could speed up his journey. With Raichu's greater power, Ash might be able to win battles more quickly and move on to more challenging regions or opponents.
Another possibility is a rival trainer who has a Pokemon that is weak against Raichu. This trainer might try to prevent Pikachu from evolving to keep their own Pokemon's advantage in battles. They could try to steal Pikachu's food or training resources to slow down its growth and evolution.
One possible plot could be that Pikachu is exposed to a rare form of electric energy in a thunderstorm that's charged with some mysterious power. This could start the evolution process. It might struggle at first, not understanding the changes its body is going through. As it evolves, it could gain new abilities like enhanced speed and a more powerful electric attack. And it might have to face new challenges in battles, as opponents are now more cautious of it.
Definitely. The idea of Ash and Pikachu's friendship is very popular in fanfiction. Their relationship is iconic. Fanfictions could tell stories of how they first met and how that initial connection grew into an unbreakable bond. It could also include side characters from the Pokémon world who notice and are inspired by their friendship, like Misty or Brock seeing how Ash and Pikachu always have each other's backs.
Well, there might be a fanfiction where Pikachu and Raichu team up to face a powerful new Pokemon threat. In this story, Pikachu's speed and cuteness combined with Raichu's strength could make for an exciting plot. There could also be a fanfiction that focuses on the relationship between a trainer and their Pikachu and Raichu, and how they all grow together.